Pressure-regulator.



I No. 673,732. Patented May 7, 190:.

H. SHOEMAKER.

' PRESSURE REGULATOR,

(Application flied Jan. 12, 1901.)

(No Model.)

w V I M I m: NORRIS pzrzns co.. PHUTD-LITKQ. WASHINGTON. a. c.

' UNTTnn STATES PATENT HARRY SHOEMAKER, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR TO GUSTAVE P. GEHRING AND MARIE V. GEHRING, OF SAME PLACE.

PRESSURE-REGULATOR.

SPECIFIGATION forming part of Letters Patent No. 6'73,732, dated May '7,1901. Application filed January 12, 1901. Serial No. 43,03t. 2N0 model.)

To (all whom it may concern- Be it known that I, HARRY SHOEMAKER, acitizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Pressure- Regulators, of which the following is aspecification.

My invention relates to improvements in pressure-regulatorsthat is, avalve to automatically control the flow of gas from mains, meters, andcompressed-gas tanks; and the main object of the invention is theprovision of an expansion-valve which is adjustable so as to bemanipulated to allow a certain pressure of gas to flow to the burners orsupplies and after once set automatically adjusts itself when thepressure is too great or too small, thus regulating the flow.

Another object of my invention is the provision of a pressure-regulatorwhich is very simple, durable, and cheap in construction and verypractical and eificient in use.

To attain the desired objects, the invention consists of apressure-regulating valve embodying novel features of construction andcombination of parts, substantially as disclosed herein.

In the drawings, Figure 1 is a vertical central section of acompressed-gas tank with my invention in elevation applied thereto, andFig. 2 is a sectional view of the regulator enlarged.

Referring to the drawings, A designates a gas-tank provided with aninlet-port and a fusible plug. Connected to the outlet-pipe D is a pipeE, which communicates with the large horizontal chamber F and thesmaller vertical chamber G, out of which leads the exit-pipe H, whichsupplies the gas to the necessary points after the pressure has beenreduced. Opposite the pipe E in the outer wall of the chamber F is anopening J, surrounded by the exteriorly-threaded collar K, which isadapted to receive the plug L and the washer or stuffing-box L, saidplug and stuffing-box being provided with the channel M. Mounted in thischannel and extending into the chamberand carrying the valve N is thevalve-stem O, which carries the cap or milled nut P. Upon its outer endand between this cap and theplugis a coiled spring Q, which has apushing tension, so that the valve is held the desired distance over theexit of the pipe D. A channel T is formed in the valve and valve-stemand is provided with the exit U..- This channel causes communicationbetween said chambers, and should the flow of gas become too great thesurplus pressure causes the valve to be pushed forward, as the exitof-the channel is to the rear of the disk or piston S, carried upon thevalve-stem and slidable in the large chamber, thereby reducing thepressure. A gage V is connected with the pipe D, as shown.

The vertical cylinder or chamber G is for the purpose of holding alarger quantity of gas after it has been expanded by the action of thevalve than would be held by a mere pipe connection to the pipe E.Therefore it prevents the slight fluctuations in the pressure from beingnoticeable upon the burners, as it has morecapacity and gives a cushioning effect to produce a steady flow of gas.

From this description, taken in connection with the drawings, theoperation of my pressure-regulating valve is readily understood and itsnumerous advantages fully appreciated; but briefly stated it is asfollows: The valve is adjusted to allow a certain pressure of gas topass freely to the desired points; but should the pressure becomegreater than necessary the surplus pressure enters the large chamber tothe rear of the piston S, pushes the valve-stem and valve forward, andthus checks the flow and consequently the pressure of the gasautomatically; but should the pressure fall below the properdegree thespring pushes the valve outward and opens the pipe D. a

It is evident that I provide a pressure-regu lating valve which is theembodiment of simplicity, durability, and inexpensiveness, thus producinga thoroughly practical and efficient valve.

I claim In combination with a gas-supply, of a pressure-regulatortherefor, comprising an inletpipe, a short horizontal pipe at rightangles thereto, a large horizontal chamber connected to one end of saidshort pipe, a smaller vertical chamber connected to the other end ofsaid short pipe, a valve fitting in the short spring surrounding theextended portion of pipe and adapted to slide over the exit of theinlet-pipe and provided with a channel the full length thereof, acollared bearingor opening in the outer wall of the large chamber, avalve-stem connected to the valve and journaled in and extending throughsaid opening of the large chamber, a piston or disk carried by the stemand mounted in the large chamber, a channel provided in the stemregistering with the channel of the valve and terminating to the rear ofthe piston, a coiled the stem, and an adjusting-nut carried upon thefree end of the stem to regulate the tension of the spring,substantially as described, and for the purposes set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

HARRY SHQEMAKER.

Witnesses:

GUsTAVE P. GEHRING, J. N. FORT, Jr.

